2020 TRIP GENERATION WORKSHEET - Page 1 of 3
The Trip Generation Worksheet calculates the trips generated within the planning area. It also allocates trips
to the proper traffic flow totals (ie. lntemal>Extemal trips, Intennalolnternal trips) in order to develop trip tables
and make assignments to the existing street system. *The highlighted areas require an input.
Step 1
:
Estimate the trips generated by the population and development within the future planning area.
Population is converted into dwelling units and then multiplied by the trip generation rate.
Commercial automobile and truck trips are then estimated and added to this total.
Population Projections
2020 Population of Whiteville: 7,587
2020 Population of Brunswick: 413
Total: 8,000
DWELLING UNIT TRIPS
2020 Brunswick & Wville Population (POP): 8,000
1994-2020 Growth Factor (GR): 1.00 %
2020 Trip Generation Factor/DU (DUTG): 8.00
2020 Whiteville City Person/DU (PDU): 2.05
2020 Planning Area Population: 12,402
2020 # DU's in Planning Area: 6,050
The 2020 Trip Generation Factor/DU is slightly higher than that used for 1994 to take into account the
historic trends. The values for persons/DU were based on the Office of State Budget and Management
2020 values for population and housing. The number of houses outside the city limits was taken from the 1 987
USGS quad maps and projected to 1994 (see the 1994 Trip Generation worksheet.) The 2020 planning area
population was obtained by multiplying the total number of houses outside the city limits, but within the planning
area, (He) by the number of person/DU and adding the product to the Whiteville/Brunswick population. The
total number of DU's in the planning area was obtained by dividing the total city population by the number of
persons/DU and adding this number to the total number of rural DU's.
TABLE 1 gives a breakdown of the number of Dwelling Units by zone (outside the city limits of
Whiteville/Brunswick but inside the planning area) and calculates the trips generated. The number
of houses outside the city limits was taken from the 1987 USGS quad maps, and are considered
rural. The growth factor (GR) is used to estimate the 2020 DU's .
TABLE 2 calculates trips generated within the city limits from the population and person/DU factor.
The population is placed into traffic zones by percentages through estimation.
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